x = int(input())
if x < 600: print(8)
elif x < 800: print(7)
elif x < 1000: print(6)
elif x < 1200: print(5)
elif x < 1400: print(4)
elif x < 1600: print(3)
elif x < 1800: print(2)
elif x < 2000: print(1) x = int(input()) x int(input()) int input() input if x < 600: print(8)
elif x < 800: print(7)
elif x < 1000: print(6)
elif x < 1200: print(5)
elif x < 1400: print(4)
elif x < 1600: print(3)
elif x < 1800: print(2)
elif x < 2000: print(1) x < 600 x 600 elif x < 800: print(7) x < 800 x 800 elif x < 1000: print(6) x < 1000 x 1000 elif x < 1200: print(5) x < 1200 x 1200 elif x < 1400: print(4) x < 1400 x 1400 elif x < 1600: print(3) x < 1600 x 1600 elif x < 1800: print(2) x < 1800 x 1800 elif x < 2000: print(1) x < 2000 x 2000 x = int(input()) int(input()) x
x = int(input())
if x < 600: print(8)
elif x < 800: print(7)
elif x < 1000: print(6)
elif x < 1200: print(5)
elif x < 1400: print(4)
elif x < 1600: print(3)
elif x < 1800: print(2)
elif x < 2000: print(1)